Security fence



FIG. 1 is a front perspective view of the security fence;

FIG. 2 is a front view of the security fence;

FIG. 3 is a rear view of the security fence;

FIG. 4 is a left-side view of the security fence;

FIG. 5 is a right-side view of the security fence;

FIG. 6 is a top view of the security fence;

FIG. 7 is a bottom view of the security fence;

FIG. 8 is a front view of the security fence, as shown in FIG. 2, in position adjacent to others of the security fence; and,

FIG. 9 is a rear view of the security fence, as shown in FIG. 3, in position adjacent to others of the security fence.

The broken lines showing of items in FIG.'s 1, 4, 5 and 6 depict portions of the article that form no part of the claimed design. The broken lines showing of items in FIG.'s 8 and 9 depict the environment of the claimed design. 

CLAIM The ornamental design for a security fence, as shown and described. 